Recent content by Warpspeed

Official supply voltage spec in oZ is 210v to 265v. The power utilities guarantee to stay within that, and any approved household appliance to Australian Standards will work within that range too. So voltage is not that critical, the grid goes up, down, and sideways all the time, and everything...

I am completely unfamiliar with commercial equipment or the official grid tie rules and regulations. I always design and build my own equipment from scratch. Much more interesting, and I get whatever features I want to have, and its for off grid anyway. But you are quite right. A detailed read...

Yes direct 235v ac connection between Growatt and Warpverter. Warpverter is just a dumb crystal locked inverter, no real advantage in moving its frequency away from 50.00Hz. The Growatt would just chase it around in frequency anyway, with no net effect. Excess power from the Growatt goes into...

If you do the math, you will find that if usable solar output power for a single string of panels varies from say 50 watts to 1,000 watts, the load resistance also needs to seamlessly adjust over a similar 20:1 range to maintain a constant optimum panel voltage. You can do your element (or...

Its like building a car without a gearbox ! You can gear that car any way you like, but it still has only one gear. What is the best gear ratio ? You can build it so its like about second gear, a bit slow to start off, and it will be howling at normal road speed. Or maybe gear it so it like...

You can get pretty effective water filters, and there are also ultraviolet sterilizers that will remove or kill most of the nasties. Its only really the kitchen water that needs to be really good.

That should all work pretty well. I think this whole Legionnaires thing is totally overblown. If the risk was as high as some people believe, people drink and wash in cold water and are not dropping dead. Bugs do not spontaneously manifest in a water tank from nowhere, they have to get in...

Because If I am using a LOT of hot water, my storage would quickly be depleted if the temperature was set very low. The whole hot water system here is something I plan to look into in the future. I would like to get more solar panels and transfer much of my heating load onto solar. First...

I have the Australian version of that, "adjustable tempering valve" Model TVA50HF fitted to my bath. https://www.rmc.com.au/wp-content/uploads/2020/10/RMC_HeatGuard_Installation_Manual_1020.pdf Its a great way fill a bath, but it does have some limitations for other purposes. When you first...

Circuit topologies like that date back almost a hundred years, long before the transistor era. Synchronous "switches" in primary and secondary of a transformer give bi directional dc power flow between two different voltages. Back in the old days a "vibrator" buzzed away with two sets of...

That is fine, if all family members can reach a consensus. I rather prefer hotter showers in winter, and cooler in summer. But that's just me... But have to agree, very close to desired final temperature is best.

Gas instantaneous water heater might be the worst type for a shower, depending on circumstances. The temperature control is pretty crude ( its done by throttling the gas). Any change in pressure or flow either at the up stream input or down stream output causes massive temperature swings until...

The first link you gave in post #72 provides an Arizona address and telephone number. My suggestion of a dc pump was general, not of any specific pump or pump supplier. I have no personal experience with solar air pumping, so there my knowledge ends. However I have quite a bit of experience...

Bop raises an interesting point. On total cloud days when its not even possible to see where exactly the sun is, solar output will be pretty pitiful. But what matters most is the total area of exposed panels, and it does not seem to matter in which direction they face. Pointing straight up is...

Don't ship to the US, are you sure ?? They are located in Arizona ! But apart from that, they are purpose built for the application, and I doubt if you could do any better.